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L SUMNER. HEEL PADS, RUBBER SULES AND TIPS FOR AND OTHER RUBBER ARTICLES.

APPARATUS FOR TRIMMFNG BOOTS AND SHOES,

AFFLHJAHQH FILED MAY 15, 1918- 1,333,882, Patented Mar. 16, 1920 2 SHEETS-SHEET I I) Q a 1: h K Q MG 'Tfl B D A. I ;g\ I

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APPARATUS FOR Winn 1mm Hm mus. HUBBER SULES AND TIPS FOR 5001's AND SHOES AND (HHER RUBBER AHTlCLES.

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. faces or, teeth at of the cutter I) UNITED STA ES PATENT OFFICE.

JOHN SUMNER, or LEYLAND, ENQLAND, MANGHESTE AssmNoRTo WOOD-MILNE LIMITED, or n, ENGLAND.

APPARATUS FOR TRIMMING HEEb-PADS, RUBBER SPLFJS AN D TIPS FOR BOOTS AND SHOES. AN D] pTI-IER RUBBER- ARTICLES.

Application filed May 15. 1915.

In H whom it may (-(ihrrrn Be it known that I, Join: British subject, residing at Leyland, county of Lancas er, England, have invented certain now and useful Inlproveinentsin Appw ratus for Trimming I-leel-Pads. Ru )ber Soles and Tips for Boots and Shoes, and other Rubber Articles, of which the followiug is a specification.

This invention relates to improvements in apparatus for trimming articles of rubber preferably of irregular or noncircula'r sha o more particularly such as stationary heel pads, soles and tips for boots and shoes.

It consists of a rapidly revolving toothed or milling cutter set, close to a stationary plate provided with a cutting edge anclg a rotary guide mounted over the revolvi ig cutter to guide the edge of the article to trimmed between it and the stationary cutter plate.

It will be fully described with reference to the accompanying drawings.

' is a side elevation of the appa- Figure l. ratus.

Fig. 2. is an end elevation.

Fig. is a transvers section through the operative parts of the apparatus.

U n a spindle A journaled in bearings B oi headstock (I and driven by fast and loose pulleys a, a a revolving toothed or milling cutter I) is ing rotated at a rapid rate.

are inclined a shown in dotted lines in Fig. 1. Adjacent to the cutter Z) a stationary steel plate E withia cutting edge e is set close to the periphery of the cutter I) the plate E being rigidly aflixcd to a rest or bracket F. The cutter plate E is preferably set inclined and is beveled or curved on its under side to conform to the contour of the rotary cutter 1).

Above the rotary cutter D a rotary guide mounted capable of be-' The cutting Specification of Letters Patent.

Smflnsn, a the article to l toothed or milling cutter and tionary cutter Patented Mar. 16, 1920- Sericl 110. 234,821.

(1 is mounted to guide or direct the edge of be trimmed between the out ting faces of the rotary cutter D and the cutter platc E. The guide (1 is concave on its under surface to project down over the rotary cutter l) to permit of its forward guiding edge approaching the cutting faces of the two cutters.

The rotary guide (It is carried by a bracket H with a. jcircular head 11 upon which it is carried onlball bearings the bracket H being adjustablyl supported by a rod or bar K clamped in a bracket l. rigidly attached to the frame oi the headstock C.

The edges of the article to be trinuned are presented to the cutting faces of the rot \ry cutter I) and the cutter plate E and'the waste portions are cut oil. by the scissor or shearing motion between the two cutting members the article being guided to the cutters by the rotary guide (1: the rotary movement of the latter facilitating the turning of the article as its edge is being trimmed. i

What I claim as my invention and desire to protect. by Letters Patent is; "l

l. iii-apparatus for trimming the edgefs of rubber articles the combination with a stationary cutter plate of a. rapidly revolf-ing mounted above the cutters to direct the edges of the articles thereto. i

2. In apparatus for trimming the edg of rubber articles the combination with a taplate of a rapidly revolving toothed or milling cutter with inclined (illitting surfaces. i

In testimony whereof I have hereuntotset my hand in presence of two subscribing witnesses, this 29 day of A ril 1918.

JO N SUMNER. Witnesses: t

1 J. Owens OBnmn, GEO. H. OBRIEN.

a rotary g iide 

